[rhn-users] custom firefox RPM and RHN

[FM]

Hello,
I'm using this method : http://fedoranews.org/tchung/firefox/
to create RPM for the latest version of firefox. The great thing is that
it's using tar.gz from mozilla.
My only problem is that after upgrading firefox using my RPM repository
(with up2date) RHN shows me all the errata for firefox (redhat version).
Event if up2date -u show my station as up to date.  I create a lots of
RPM, but never see this prob. Do I need a special tag for rhn ? here is
the spec file http://fedoranews.org/tchung/firefox/1.5.0.1/firefox.spec